Pollen Calendar Reference – Online Month‑by‑Month Plant Guide
Select your region and see a static calendar of common pollen seasons. Informative for allergy sufferers.
UD5 Toolkit
Select your region and see a static calendar of common pollen seasons. Informative for allergy sufferers.
Enter your average last frost date and generate a planting schedule for vegetables and flowers. Know exactly when to start seeds indoors or direct sow.
Estimate the baby's due date based on last menstrual period (LMP) or conception date. Also shows current week and trimester. Educational only.
Convert a Gregorian calendar date to its Julian Day Number and vice versa. Used in astronomy and mainframe computing.
Calculate corrected (adjusted) age for premature infants based on birth date and due date. Important for developmental milestone tracking. Local only.
Convert pregnancy weeks into months and trimesters. Simple reference table with baby size comparisons. Informational only.
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.
Enter any two of radius, mass, speed, period, force to find the others. Physics student aid.
Enter coordinates and calculation method to estimate Islamic prayer times. Runs entirely in the browser. No internet needed.
Convert a photo into a color‑reduced embroidery or cross‑stitch pattern with DMC thread colors. Adjust size and palette. Print chart.
Animated circle guides your breathing: breathe in, hold, breathe out. Customizable ratios (e.g., 4-7-8). Soothing colors, optional bell sound. Purely local.
Collect popular old wives' tales (Chinese gender chart, ring test, cravings) for a purely-for-fun gender prediction. No scientific claims. Local only.
Draw a raised bed and drag plant icons to arrange them. See spacing requirements. Print layout.
Find the best tilt angle for solar panels based on your latitude and season (summer, winter, average). Simple trigonometric estimation. No location data sent.
Generate and print custom calligraphy practice sheets with adjustable x-height, slant angle, and base line. Perfect for copperplate or Spencerian.
Arrange virtual fabric squares or triangles on a grid to preview a quilt pattern. Change colors and sizes. Export layout.
Design a crystal grid by placing crystals on a sacred geometry template. Add notes. Screenshot your layout. Spiritual/art.
Control image‑orientation: from-image vs none. See how the browser interprets EXIF rotation. Fix portrait photos.
Rotate a 3D cube on your phone using the Gyroscope API. See angular velocity around each axis. Amazing sensor demo.
Create beautiful Spirograph patterns by adjusting circle radii and pen position. Change colors and save as PNG. Relaxing math art.
Generate a sheet of printable question cards for family dinners. Engage kids, share stories.
Generates simple puzzle ideas (cipher, hidden messages) that can be printed for home escape rooms.
Get a random heartfelt or funny birthday message to write in a card. Choose from various tones. Local.
Click for a random drawing or sketching idea. Characters, objects, scenes. Beat artist's block. All local.
Enter hop additions with time and alpha acid to estimate International Bitterness Units. Adjust recipe.
Searchable catalog of yoga poses with illustrations, instructions, and benefits. For beginners and teachers. Static resource.
Click through a visual emotion wheel to explore nuanced feelings. Build emotional vocabulary and self-awareness. Local, no data collected.
Drag emotion word cards onto a canvas to visualize your day. Mix and match. Screenshot to share. Therapeutic.
Enter isobutane canister weight, meal count, and burn time per meal to estimate how many days your fuel will last. Plan your resupply.
Enter swatch dimensions and stitches to get gauge. Then calculate cast-on for desired finished size.